Home Actress Jenna Ortega dresses up as singer Ariana Grande for the Just Jared Halloween party in Hollywood.<br>(Photo by Byrdman / BACKGRID) Actress Jenna Ortega dresses up as singer Ariana Grande for the Just Jared Halloween party in Hollywood.<br>(Photo by Byrdman / BACKGRID)

Actress Jenna Ortega dresses up as singer Ariana Grande for the Just Jared Halloween party in Hollywood.
(Photo by Byrdman / BACKGRID)

Ryan Seacrest exits the The Casamigos Halloween Party in Beverly Hills

Joe Jonas and Sophie Turner get creative with their costumes at Kate Hudson’s party. Sophie is dressed as an elephant while Joe opts for a dress and wig, which resembles his fiancee’s character Sansa Stark from ‘Game of Thrones.’<br>(Photo by BACKGRID)